Fire-box.



J. M. MGOLELLON.

FIRE BOX.

APPLICATION FILED IBBzB, 1913.

Patented Nov. 18, 1913.

2 SHEETSSHEET 1.

Inveniar: Jamesm Mo? Wisdom,

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wzzmsse COLUMBIA PLANOGRAPH C0.,'w.\smNGTcN, D. c.

J. M.- MOGLELLON.

FIRE BOX;

APPLICATION FILED FEB. 3,1913.

i Mk IV 0 Wm lmcw Nu HM 2 MA m M P 1% J OOOOOOOOOOOOOOOOOOOOOODOOOOOO M. o@ o ooo Witnesses.-

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COLUMBIA PLANOGRAPH 110.. WASHINGTON. D. c.

STA s arnr amen.

JAMES M. MccLELLorror EVERETT, MASSACHUSETTS.

FIRE-BOX.

To all whom it may concern:

. Be it known that I, JAMns M. NICOLEL LON, a citizen of the United States, and a resident of Everett, in the county of MiddleseX and Commonwealth of Massachusetts, have invented an Improvement in F ire- Boxes, of which the following description, 1n connectlon with the accompanying draw ing a modification; Fig. 4 on an enlarged scale shows an element of the wall as it appears before shaping; Fig. 5 is an end elevation of the element shown in Fig. 4 after being shaped to channel form; and Fig. 6

is a side elevation of the channel shown in Fig. 5.

Referring to the drawing, the illustrative fire-box there shown as embodying the invention comprises side walls-1 each including a series of upright hollow sections 3 of substantial volume. As shown herein, each of these sections comprises channels 5 and 7 preferably of thin material and having flanges projecting in the same direction away from the interior of thefire-box and riveted or otherwisev secured together exteriorly of the section. The channel 5 is substantially deeper than the channel 7 and preferably has a portion facing the interior of the fire-box which in cross-section is in the form of an arc of a circle. This portion, in facing the interior of the firebox, will be subjected to the highest heat and will be more liable to distortion under pressure within the section, than the outer channel 7, but being in the form of an arc of a circle, will tend to retain its normal shape since it is a well known fact that pressure in a container tends to cause the same-to assume a form circular in section.

Specification of Letters Patent.

Application filed February 3, 1913.

Serial No. 745,895.

As a result, this portion of the channel 5 constructed as described is self-sustaining.

The circular arcportions of the adjacent Patented Nov. 18,1913:

channels facing the interior of the firebox arch away from one another without areas and nipples sufliciently large to permit of contact capable of receiving apertures ample circulation from one section to another. To provlde walls of sufliclent extent to receive such apertures and nipples the lower ends of the flanges of the channels 5 are died out or formed with extension portions 9 having large apertures 10 therein. The outer channels 7 are bent or curved out at their lowerends to conform to the curvature formed by the extension of the legs of the channels 5. When the wall sections thus formed are assembled the apertures 10 of adjacent sections will be in registration and may receive nipples 11 expanded therein. The channel 5 is also provided at its upper end with an aperture 12 for registration with. an aperture 1n one of the crown drums,

as more fully hereinafter described.

The plate 9 died out as described may be readily shaped in any suitable manner from its flat form (Fig. 4) into a channel (Figs.

.5 and 6). In forming the channel its lower end is bulged somewhat as at 5 to further increase the area of contact of the sections. By the construction described there are provided at the lower ends of the sections circulation promoting heads of sufficient size to enable the use of apertures 10 so large as to permit an ample free circulation of water from section to section without the necessity of providing any other apertures between the sections. This leaves substantially the entire length of the sections smooth and free from any obstructions and without any cross current creating openings in the main body of the section such as might impede the free upward circulation in the section.

To close the lower ends of the sections,- each may be provlded w1th a cup 13 or other suitable means shaped to conform to the contour of the interior of the end of the section .and may be riveted and welded or To secure the sectionsagainst separation at their lower otherwise secured thereto.

ends there may be provided a foundation ms f f ring or member 15 beneath the ends of the sections and common thereto.

The cups?! maybe secured to this foundation ring by.

ring and tongues.

medial tongues 17 depending therefrom and fitting agroove 19 extending longitudinally of the ring. The tongues may be secured in the groove by bolts 21 entered through the This tongued cup and foundation ring construction may be substantially the same as shown and described in any copending application, erial No. 736,897 filed Dec. 16, 1912. By this closing cup and foundation ring construction the lower ends of the sections are secured in proper assembled relation.

A suitable crown is provided for the fire box shown herein as large side drums 23 and smaller intermediate drums 25 and 27. To connect the side wall sections with the large drums 23, the upper ends of the cylindrical portions of the channels 5 may be flattened as at'29 to conform to the contours of the drums. To permit communication from the sections to the crown drums the latter are provided with apertures registering with the apertures 12, referred to, in which are expanded suitable nipples 31. The sections are riveted or otherwise secured to said drums around said nipples. The

upper ends of the sections may be closed by cups 33 riveted or otherwise securedto the sections. To facilitate the cleaning or flush ing out of the sections these top cups may be provided with plugs 35 threaded therein and similar plugs 37 may be provided in the channels 7 adjacent the lower ends of the sections. The side walls and the crown drums may be secured to a flue sheet 39 into which are entered the usual fines/l1 con tained in a boiler barrel 43. To permit the water to flow from the barrel into the walls of the fire-box the sections adjacent the flue sheet may be nippled thereto. The water in the barrel will flow through the nipples into the side wall sections and rise in the latter to the nipples between the side wall sections and the drums and flow thence into said drums.

The wall sections being large and the channels 5 being of thin material, when subjected to the high heat within the fire-box, are very effective in developing and generating steam in the water in the sections. As stated, this creates pressure within the sections, but owing to the partial cylindrical form of the channels 5, this pressure will not distort said channels. On the contrary, said pressure will tend to maintain the partial cylindrical form thereof and there will be no danger of distorting or weakening the same. The channels 5 may expand and contract more or'less, but in so doing tend to maintain their circular arc section. The channels 7, being subjected to less heat than the channels 5 and having 7 but a slight curvature, will resist any separation of the sections and effectively hold them together.

to the high heat which the channels 5 experience in facing the interior of the lire box, they are not liable to distortion but, .on the contrary, effectively resist distortion. The flat overlapping flan es of adjacent channels 5 present a stiff construction which resists distortion of the adjoining sides of the sections. As a result, the section as a whole is sutliciently strong to resist distortion. As stated, the circular arc portion of the channel 5 is heated the hottest and therefore is weaker than the rest of the section, but as also stated, owing, to its circular arc form, the pressure within the section tends to retain this form without any liability of distortion.

Owing to the fact that the sections are self-sustaining substantially throughout their lengths it is not necessary to provide means for securing them together through-- out their lengths, but on the contrary it suflices to secure their lower ends together as by the closing cup and foundation ring construction and to secure their upper ends together as by the connection of said ends with the crown drums. The portion of the sections intermediate their upper and lower ends thus are left free from rivets or other securing means for connecting them together. By this construction there are no rivets contained within the interiors of the sections, but their surfaces are left smooth, permitting free circulation therethrough without any projections to invite incrustation or sediment. Since the rivets connecting the channels of asection are all exterior of the section the parts may be readily connected. As the sections are connected to gether merely at their upper and lower ends they may be very readily assembled.

The sectional view (Fig. 2) shows the channel flanges of each section riveted together by short rivets, but the adjacent sections are not connected excepting at their upper and lower ends as described. In some cases it may be desirable to connect the sections together. This may be conveniently effected by long rivets passing through the flanges of the channelsof adjacent sections, as well shown in Fig. 3.

Having described one embodiment of the invention, without limiting the same there to, what I claim as new and desire to secure by Letters Patentis:

1. In a fire-box, the combination of a series of upri ht, hollow wall sections, each comprising outer and inner channels having overlapping flan es secured together, the iii ner channels having circular arc portions, facing the interior of the fire-box, self-sustaining and expansible transversely of the section; and means to secure said sections in assembled relation.

2 In afire-box, the combination of a series of upright wall sections, each comprisends of said sections ing outer and. inner channels having overlapping flanges secured together, the inner channel having a circular arc portion fac ng the interior of the fire-box, self-sustaining and expanslble a transversely of, the

section; and means at the upper and lower for securing them in assembled relation. f V F 3.7 In a fire-box, the combination ofa series, of upright wall sections comprising outer and inner channels having flanges secured together, the flanges of said inner channels being extended, to provide flattened contacting walls for the sections, said flattened walls being apertured and nippled together to permit circulation from one section to another.

4. In a fire-box, the combination of a series of upright wall sections comprising innor and outer channels having flanges riveted together, said inner channels having the lower ends of their flanges extended to provide contacting walls of substantial eX- tent; nipples expanded in registering apertures in said walls; and means to secure the upper and lower ends of the sections together.

5. In a fire-box, the combination of a series of upright wall sections comprising outer and inner channels having flanges secured together, the flanges of said inner channels being enlarged and flattened adjacent their lower ends; nipples in registering apertures in said flattened portions; cups closing the lower ends of said sections; and foundation means secured to said cups.

6. In a fire-box, the combination of up right wall sections, each comprising outer and inner channels having overlapping flanges secured together, said inner channels having circular arc portions facing the interior of the fire-box; and crown drums, the circular portions of said channels being flattened and secured to said drums.

7. In a fire-box, the combination of up right wall sect-ions, each comprising outer and inner channels having overlapping flanges projecting away from the interior of the fire-box and secured together, said inner channels having circular arc portions facing the interior of the fire-box flattened adjacent their upper ends and nippled to said crown drums.

'8.-A fire-box comprising, in combination, crown drums and a series of upright wall sections, each comprising inner and outer channels having overlapping flanges projecting away from the interior of the firebox and secured to ethert said nner channels having circular arc portions flattened at their upper ends to conform to the contours of said drums and apertured and nippled thereto.

9. In a fire-box, the combination of crown drums 23 and side walls comprising series entrance openings in said wider portions.

of upright sections 3 comprising inner chan nels 5 and outer channels 7 having flanges secured together, said channels 5 having enlarged portions 9 and nipples 11 in registering apertures in said portions 9. V 7

10. In a fire-box, the combination of a series of upright wall sections comprising inner and outer channels having flanges secured together, said inner channels having their flanges enlarged adjacent the lower ends of the sectionsand said outer channels being formed to conform to said enlarged portions.

11. In a fire-box, theco-mbination of aseries of upright wall sections comprising in ner and outer channels, said inner channels having enlarged portions and said outer channels having portions formed to' conform to said enlarged portions; and nipples entered through apertures in the enlarged poi tions of the inner channels. 7

12; In a fire-box, the combination of a series of upright wall sections comprising innor and outer channels, said inner channels having enlarged portions projecting away from the-interior of the fire-box, and said outer channels having portions formed to conform to said enlarged portions; means closing the lower ends of said sections; and means providing communication between said enlarged channel portions.

13. In a fire-box, the combination of a series of upright wall sections comprising outer and inner channels secured together, the inner channels having circular portions 100 facing the interior of the fire-box and extending substantially throughout the lengths of the sections, and a circulation head at the lower ends of the sections comprising extended portions of said inner channels, 5 portions of said outer channels being formed to conform to said extended portions; means closing the lower ends of the sections; and means permitting communication through said extended portions.

1 In a fire-box, the combination of a wall section comprising outer and inner channels having flanges projecting away from the interior of the fire-box, one of said channels having portions of its flanges en- 115 larged and apertured to provide large en trance openings to the section.

15. In a fire-box, the combination of a wall section comprising outer and inner channels having flanges projecting away 120 from the interior of the fire-box and secured together, portions of the flanges of one of the channels being substantially wider than the main portions of said flanges; and large 16. In a fire-box, the combination of a wall section comprising outer and inner channels having flanges projecting away from the interior of the fire-box, one of said channels having portions wider than the main portions'of said flanges and apertured to provide a circulation head for said channel.

17. In a fire-box, the combination of a wall section comprising outer and inner channels having flanges projecting away from the interior of the fire-box, one of said channels having portions wider. than themain portions of said flanges and apertured to provide a circulation head for said channel; and closing means for the ends of the section.

18. In a fire-box the combination of inner 7 and outer walls comprising channels having outwardly directed flanges, portions of faces, each having flanges projecting away from the interior of the fire-box, portions of the flanges of one of said'snrfaces being enlarged and apertured to form a water circulation head, the flanges of said other surface being interposed between and secured to the flanges of said inner surface.

21. In a fire-box, the combination of a wall comprising a series of upright sections each or built-up construction and having; its lower end enlarged and apertured to provide a circulation head. 7

22. In a fire-box, the combination of a sectional wall comprising a series "of upright channels, some ofsaid channelsliaving their lower ends enlarged and flattened for receiving large water circulation apertures; and means to secure the flattened portions of said channels together.

In testimony whereof, 1 have signed my name to this specification, in the presence of two subscribing witnesses.

JAMES M. McGLELLON. \Vitnesses HENRY T. WILLIAMS, ROBERT E. KAMMLER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I C. 

